harmony 鸿蒙Util Subsystem Changelog
Util Subsystem Changelog
Compared with OpenHarmony 3.2 Beta4, OpenHarmony 3.2.10.7(MR) has the following API changes in the util subsystem.
cl.util.1. randomUUID Name Changed
The randomUUID function name is changed to generateRandomUUID.
Before change: function randomUUID(entropyCache?: boolean): string
After change: function generateRandomUUID(entropyCache?: boolean): string
You need to adapt your application.
Change Impact
JS APIs in API version 9 are affected. Your application needs to adapt these APIs so that it can properly implement features in the SDK environment of the new version.
Key API/Component Changes
| Module | Method/Attribute/Enum/Constant | Change Type |
|---|---|---|
| @ohos.util | function randomUUID(entropyCache?: boolean): string | Deleted |
| @ohos.util | function generateRandomUUID(entropyCache?: boolean): string | Added |
Adaptation Guide
Refer to the code snippet below to call generateRandomUUID in your application.
Example:
import util from '@ohos.util'
let uuid = util.generateRandomUUID(true);
console.log("RFC 4122 Version 4 UUID:" + uuid);
// Output:
// RFC 4122 Version 4 UUID:88368f2a-d5db-47d8-a05f-534fab0a0045
cl.util.2 randomBinaryUUID Name Changed
The randomBinaryUUID function name is changed to generateRandomBinaryUUID.
Before change: function randomBinaryUUID(entropyCache?: boolean): Uint8Array
After change: function generateRandomBinaryUUID(entropyCache?: boolean): Uint8Array
You need to adapt your application.
Change Impact
JS APIs in API version 9 are affected. Your application needs to adapt these APIs so that it can properly implement features in the SDK environment of the new version.
Key API/Component Changes
| Module | Method/Attribute/Enum/Constant | Change Type |
|---|---|---|
| @ohos.util | function randomBinaryUUID(entropyCache?: boolean): Uint8Array; | Deleted |
| @ohos.util | function generateRandomBinaryUUID(entropyCache?: boolean): Uint8Array | Added |
Adaptation Guide
Refer to the code snippet below to call generateRandomBinaryUUID in your application.
Example:
import util from '@ohos.util'
let uuid = util.generateRandomBinaryUUID(true);
console.log(JSON.stringify(uuid));
// Output:
// 138,188,43,243,62,254,70,119,130,20,235,222,199,164,140,150
cl.util.3. contains Parameter Type in the LRUCache Class Changed
The contains parameter type in the LRUCache class is changed from object to K.
Before change: contains(key: object): boolean
After change: contains(key: K): boolean
You need to adapt your application.
Change Impact
JS APIs in API version 9 are affected. Your application needs to adapt these APIs so that it can properly implement features in the SDK environment of the new version.
Key API/Component Changes
| Module | Class | Method/Attribute/Enum/Constant | Change Type |
|---|---|---|---|
| @ohos.util | LRUCache | contains(key: object): boolean | Deleted |
| @ohos.util | LRUCache | contains(key: K): boolean | Added |
Adaptation Guide
Follow the code snippet to use the contains function in your application.
Example:
import util from '@ohos.util'
let pro = new util.LRUCache();
pro.put(2,10);
let obj = {1:"key"};
let result = pro.contains(obj);
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